Convert CSV to flat ASCII?

[jdiver]

Does anyone know of a way to convert a CSV file to a flat ASCII file? I don't know if it's possible using ereg_replace in some way. I would greatly appreciate anyone who has any ideas on how to do it. TIA.

[Installer]

Do you mean from this:
item1,item2,item3

To this:
item1
item2
item3
?

If so:

$csv = file_get_contents($file);
$flat = str_replace(',', "\n", $csv);